document.write( "Question 254740: Sally can paint a house in 4 hours, while John can paint the same house in 6 hours. How long will it take for the two of them to paint house together? \n" ); document.write( "
Algebra.Com's Answer #187377 by vksarvepalli(154)\"\" \"About 
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Sally can paint a house in 4 hours \r
\n" ); document.write( "\n" ); document.write( "that means in 1 hour sally can paint 1/4 th of the house
\n" ); document.write( "similarly in 1 hour john can paint 1/6 th of the house\r
\n" ); document.write( "\n" ); document.write( "so together in 1 hour they can paint 1/4 + 1/6 = 5/12 th of the house\r
\n" ); document.write( "\n" ); document.write( "so to paint the house together they take 12/5 hours\r
\n" ); document.write( "\n" ); document.write( "that is 2.4 hours
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